A charger including a charging interface and a converter coupled to the charging interface. The converter includes a first plurality of switching transistors coupled to the charging interface and a transformer including a primary winding, a secondary winding, and an auxiliary winding. The primary winding is coupled to the first plurality of switching transistors. A second plurality of switching transistors is coupled between the secondary winding and a battery interface. An auxiliary system interface is coupled to the auxiliary winding. A controller is configured to control the first plurality of switching transistors and the second plurality of switching transistors to generate a first signal at the battery interface and a second signal at the auxiliary system interface.
Legal claims defining the scope of protection, as filed with the USPTO.
6. The charger of claim 1, wherein the controller is configured to control the first plurality of switching transistors and the second plurality of switching transistors using a constant duty cycle and a variable frequency to control a current generated by the converter at the battery interface.
7. The charger of claim 6, wherein the controller is configured to control the current generated by the converter at a constant value responsive to a voltage at the battery interface being less than a first threshold.
8. The charger of claim 6, wherein the controller is configured to control the current generated by the converter to generate a constant voltage at the battery interface responsive to the voltage at the battery interface being greater than the first threshold.
9. The charger of claim 6, wherein the controller is configured to control the current generated by the converter to generate a constant power at the battery interface responsive to the power at the battery interface being greater than the first threshold.
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January 27, 2021
March 12, 2024
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